Items in this category are largely exploration assessment reports, filed in accordance with the Canada Mining Regulations (CMR) to present the results of exploration on mineral claims or prospecting permits. Exploration described in these reports includes the results of a wide range of geological, geophysical, geochemical and drilling activities. This category also includes Prospectors Reports, filed by prospectors who were supported by the territorial government and detailing their observations during supported projects; Corporate Internal Files which are internal company reports describing exploration results, donated to the government archives; and Property Visit Reports written by government geologists examining exploration properties in accordance with the CMR.